summaryrefslogtreecommitdiffstats
path: root/tools/perf/tests/expand-cgroup.c
blob: dfefe5b60eb23b1467149c5d8ecedbc1ce0a69aa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
// SPDX-License-Identifier: GPL-2.0
#include "tests.h"
#include "debug.h"
#include "evlist.h"
#include "cgroup.h"
#include "rblist.h"
#include "metricgroup.h"
#include "parse-events.h"
#include "pmu-events/pmu-events.h"
#include "pfm.h"
#include <subcmd/parse-options.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static int test_expand_events(struct evlist *evlist,
			      struct rblist *metric_events)
{
	int i, ret = TEST_FAIL;
	int nr_events;
	bool was_group_event;
	int nr_members;  /* for the first evsel only */
	const char cgrp_str[] = "A,B,C";
	const char *cgrp_name[] = { "A", "B", "C" };
	int nr_cgrps = ARRAY_SIZE(cgrp_name);
	char **ev_name;
	struct evsel *evsel;

	TEST_ASSERT_VAL("evlist is empty", !evlist__empty(evlist));

	nr_events = evlist->core.nr_entries;
	ev_name = calloc(nr_events, sizeof(*ev_name));
	if (ev_name == NULL) {
		pr_debug("memory allocation failure\n");
		return TEST_FAIL;
	}
	i = 0;
	evlist__for_each_entry(evlist, evsel) {
		ev_name[i] = strdup(evsel->name);
		if (ev_name[i] == NULL) {
			pr_debug("memory allocation failure\n");
			goto out;
		}
		i++;
	}
	/* remember grouping info */
	was_group_event = evsel__is_group_event(evlist__first(evlist));
	nr_members = evlist__first(evlist)->core.nr_members;

	ret = evlist__expand_cgroup(evlist, cgrp_str, metric_events, false);
	if (ret < 0) {
		pr_debug("failed to expand events for cgroups\n");
		goto out;
	}

	ret = TEST_FAIL;
	if (evlist->core.nr_entries != nr_events * nr_cgrps) {
		pr_debug("event count doesn't match\n");
		goto out;
	}

	i = 0;
	evlist__for_each_entry(evlist, evsel) {
		if (strcmp(evsel->name, ev_name[i % nr_events])) {
			pr_debug("event name doesn't match:\n");
			pr_debug("  evsel[%d]: %s\n  expected: %s\n",
				 i, evsel->name, ev_name[i % nr_events]);
			goto out;
		}
		if (strcmp(evsel->cgrp->name, cgrp_name[i / nr_events])) {
			pr_debug("cgroup name doesn't match:\n");
			pr_debug("  evsel[%d]: %s\n  expected: %s\n",
				 i, evsel->cgrp->name, cgrp_name[i / nr_events]);
			goto out;
		}

		if ((i % nr_events) == 0) {
			if (evsel__is_group_event(evsel) != was_group_event) {
				pr_debug("event group doesn't match: got %s, expect %s\n",
					 evsel__is_group_event(evsel) ? "true" : "false",
					 was_group_event ? "true" : "false");
				goto out;
			}
			if (evsel->core.nr_members != nr_members) {
				pr_debug("event group member doesn't match: %d vs %d\n",
					 evsel->core.nr_members, nr_members);
				goto out;
			}
		}
		i++;
	}
	ret = TEST_OK;

out:	for (i = 0; i < nr_events; i++)
		free(ev_name[i]);
	free(ev_name);
	return ret;
}

static int expand_default_events(void)
{
	int ret;
	struct rblist metric_events;
	struct evlist *evlist = evlist__new_default();

	TEST_ASSERT_VAL("failed to get evlist", evlist);

	rblist__init(&metric_events);
	ret = test_expand_events(evlist, &metric_events);
	evlist__delete(evlist);
	return ret;
}

static int expand_group_events(void)
{
	int ret;
	struct evlist *evlist;
	struct rblist metric_events;
	struct parse_events_error err;
	const char event_str[] = "{cycles,instructions}";

	symbol_conf.event_group = true;

	evlist = evlist__new();
	TEST_ASSERT_VAL("failed to get evlist", evlist);

	parse_events_error__init(&err);
	ret = parse_events(evlist, event_str, &err);
	if (ret < 0) {
		pr_debug("failed to parse event '%s', err %d, str '%s'\n",
			 event_str, ret, err.str);
		parse_events_error__print(&err, event_str);
		goto out;
	}

	rblist__init(&metric_events);
	ret = test_expand_events(evlist, &metric_events);
out:
	parse_events_error__exit(&err);
	evlist__delete(evlist);
	return ret;
}

static int expand_libpfm_events(void)
{
	int ret;
	struct evlist *evlist;
	struct rblist metric_events;
	const char event_str[] = "CYCLES";
	struct option opt = {
		.value = &evlist,
	};

	symbol_conf.event_group = true;

	evlist = evlist__new();
	TEST_ASSERT_VAL("failed to get evlist", evlist);

	ret = parse_libpfm_events_option(&opt, event_str, 0);
	if (ret < 0) {
		pr_debug("failed to parse libpfm event '%s', err %d\n",
			 event_str, ret);
		goto out;
	}
	if (evlist__empty(evlist)) {
		pr_debug("libpfm was not enabled\n");
		goto out;
	}

	rblist__init(&metric_events);
	ret = test_expand_events(evlist, &metric_events);
out:
	evlist__delete(evlist);
	return ret;
}

static int expand_metric_events(void)
{
	int ret;
	struct evlist *evlist;
	struct rblist metric_events;
	const char metric_str[] = "CPI";

	struct pmu_event pme_test[] = {
		{
			.metric_expr	= "instructions / cycles",
			.metric_name	= "IPC",
		},
		{
			.metric_expr	= "1 / IPC",
			.metric_name	= "CPI",
		},
		{
			.metric_expr	= NULL,
			.metric_name	= NULL,
		},
	};
	const struct pmu_events_map ev_map = {
		.cpuid		= "test",
		.version	= "1",
		.type		= "core",
		.table		= pme_test,
	};

	evlist = evlist__new();
	TEST_ASSERT_VAL("failed to get evlist", evlist);

	rblist__init(&metric_events);
	ret = metricgroup__parse_groups_test(evlist, &ev_map, metric_str,
					     false, false, &metric_events);
	if (ret < 0) {
		pr_debug("failed to parse '%s' metric\n", metric_str);
		goto out;
	}

	ret = test_expand_events(evlist, &metric_events);

out:
	metricgroup__rblist_exit(&metric_events);
	evlist__delete(evlist);
	return ret;
}

static int test__expand_cgroup_events(struct test_suite *test __maybe_unused,
				      int subtest __maybe_unused)
{
	int ret;

	ret = expand_default_events();
	TEST_ASSERT_EQUAL("failed to expand default events", ret, 0);

	ret = expand_group_events();
	TEST_ASSERT_EQUAL("failed to expand event group", ret, 0);

	ret = expand_libpfm_events();
	TEST_ASSERT_EQUAL("failed to expand event group", ret, 0);

	ret = expand_metric_events();
	TEST_ASSERT_EQUAL("failed to expand metric events", ret, 0);

	return ret;
}

DEFINE_SUITE("Event expansion for cgroups", expand_cgroup_events);